[ 3 ] Benjamin Okell, "Pectoral drops for rheumatism, gravel, etc.," British patent 483, March 31, 1726.
[ 4 ] British Patent Office, Patents for inventions: abridgements of specifications relating to medicine, surgery, and dentistry, 1620-1866, London, 1872.
[ 5 ] London Mercury, London, August 19-26, 1721.
[ 6 ] A short treatise of the virtues of Dr. Bateman's Pectoral Drops, New York, 1731. A 36-page pamphlet preserved in the Library of the New York Academy of Medicine. This is an American reprint of an English original, date unknown.
[ 7 ] A broadside, issued in London, ca. 1750, advertising "Dr. Bateman's Drops," is preserved in the Warshaw Collection of Business Americana, New York. Later reprints of this same broadside are preserved in the private collection of Samuel Aker, Albany, New York, and in the Smithsonian Institution.